generally, microscopic, wormlike animals that live saprophytically in water or soil, or as parasites of plants and animals.

nocturnal

of the night; applied to insects that fly or are active at night.

nodes

a joint on a stem, represented by point of origin of a leaf or bud; sometimes represented by a swollen or constructed ring, or by a distinct leaf scar.

nymphs

young insects which quit the egg in a relatively advanced stage of morphological development, differing from the adult in having the wings and the genitalia present only in an incompletely developed conditions; a young stage of insects with an incomplete metamorphosis, (e.g., stinkbugs, aphids, etc.).